Apparatus for forming concrete floors



March 28, 1933. H. w. R008 1,902,

APPARATUS FOR FORMING CONCRETE FLOORS Filed March 15, 1930. 4 Sheets-Sheet 1 ll 1 -40 23 IE 20 E 2| g lz 714's A TTORNEY March 28, 1933. H, w R 1,902,899

APPARATUS FOR FORMING CONCRETE FLOORS Filed March 1 5,- 1930 4 Sheets-Sheet 2 711' 5 A TTORNE y March 28, 1939' H w, R005 1,902,899

APPARATUS FOR FORMING CONCRETE FLOORS Filed March 15, 1930 4 Sheets-Sheet 3 INVENTOR 27/912 J-Zflr' WROOS 7111s A TZORNE V March 28, 1933. H. w. R008 APPARATUS FOR FORMING CONCRETE FLOORS Filed March 15,, 1930 4 Sheets-Sheet 4 e3 25 52 F49 14 LINVENTOR I I W 3005 BY 7Zt 6ATTOR/VEY Q Patented Mar. 28, 1933 UNITED stares PATENT D FFICE HENRY W. BOOS, 0F CINCINNATI, OHIO V APPARATUS FOR FORMING CONCRETE FLOORS Application filed March 13, 1930. Serial No. 435,468.

which the floor forms between the beams or girders may also be supported.

Another object of the invention is to provide a temporary support or shore for floor molds adapted to rest in contact with the side of the beam and support the forms for the beam mold.

Still another object of the invention is to provide a shore of this kind having tops adapted to cooperate with the floor forms in the floor mold and provided with means adapted. to engage and support the floor forms.

To these and other ends, the invention consists in the construction and arrangement of parts that will appear from the following description'when read in conjunction with the accompanying drawings, the novel features being pointed out in the claims following the specification.

In the drawings:

Fig. l is a fragmentary plan View of a floor mold constructed according to one embodiment of the invention;

Fig. 2 is a front elevation of a shore especially constructed for supportingbeam'and girder forms at their intersection and show ing a fragment of a beam form connected thereto;

Fig. 3 is a side elevation of the same showing a fragment of a girder form connected thereto; 7

Fig. 4c is a similar View showing the form supporting arm dropped to inoperative po- Fig. 5 is a fragmentary perspective view of the inside of a girder mold looking into an intersecting beam mold; I

Fig. 6 is a fragmentary horizontal section taken substantially on line 66 of Fig. 5';

and looking in the'direction of the arrow at said line; i

Fig. 7 is a horizontal section through one of the shores showing how the beam and girder forms are secured thereto;

Fig. 8 is a side elevation of a shore especially adaptedto support beam and girder forms at points between intersections, parts being shown in section; i

Fig. 9 is a transverse-section of the same taken substantially on line 99 of Fig. 8, and looking in the direction of the arrow at said line;

Fig. 10 is an end elevation of a form for a beam mold shown in Fig. 1, having an ad- 1 justable bottom;

Fig. 11 is an inverted plan view of the bottom of the beam form shown in Fig. 10, one of its adjusted positions being shown in dotted lines; V

Fig. 12 is a side elevation of the same;

Fig. 13 is a front elevation of a modified form of the shore shown in Fig. 8, parts of the beam form supported thereon beingbroken away, and

Fig. 14 is a side elevation of the same.

Referring specifically to the drawings, in which like reference numerals refer to the same parts in all the figures, 1 represents a standard floor form, cut out at its corners to fit around the tops of shores 2, 3 and 4.- on which they are supported. The forms 1 are assembled on the temporary supports or shores to form a floor mold. Extending across the floor in one direction is a girder mold 5, and at substantially right angles to and intersecting the girder mold is a beam mold 6. At one side of the floor, the floor frames into an outside beam or lintel 7, which frames into the column 8 for permanent support. The girder 5 also frames into the col-- umn 8 at substantially right angles to the lintel. In the embodiment illustrated, the space between the beam and the lintel is'too narrow for more than one row of the standard unit forms 1, so'that the narrow opening between the unit forms and the lintel is shown filled in with a row of narrow forms 9.

Referring to Fig. 1, it will benoted that at the points of intersection between the beams 55 tion 21 arranged at substantially right angles and girders, the tops 4 of the shores are of only one-quarter the area of the standard or usual top 2. The corner of but one floor form 1 fits around the top 4 and is supported at that point, while four floor forms fit around the top 2 and are supported at that point. Between the intersections of the beams and girders the shore tops 3 are shown, which are of one-half the area of the tops 2, and two of the floor forms 1 or 9 fit around it and are supported at that point. The special shores. having the tops 3 and 4 are mounted in the sides of the beam and girder molds between the beam or girder forms, and the forms are secured thereto and supported thereon.

The shore 4 having a one-quarter head is shown in detail in Figs. 2 to 7 inclusive, and comprises an upright supporting member 10 having two vertical walls 11 and 12 arranged at substantially right angles to each other. Secured to or formed integral with one of said walls,the wall 11 in the embodiment illustrated, is a bracket 13 flush with the upper ends of the walls 11 and 12, which provides a support for the top 4 seated thereon, and the walls 11 and 12 and flush with said walls. Intermediate its ends, the bracket 13 has a projection 14 on which an arm 15 is pivotally mounted. The arm 15 has a pair of ears which engage opposite sides of the bracket and guide it in its pivoted movements. The outer end of the arm 15 has a substantially V-shaped opening in an upwardly and outwardly inclined finger 15 Adjacent its outer end, the bracket 14 is slotted at 16 for the reception of a wedge 17 or other suitable means for retainingthe arm in'the operative position shown'in'Figs. 2, 3 and 6, in which its finger 15 is adapted to engage a bracket 18 in the corner ofthe floor form for supporting it- When the wedge is removed from its slot, the arm 15 is free to fall by gravity to the position shown in Fig. 4, in which it is released from the form which may then be removed, leaving the slab of concrete formed thereon supported directly on the top of the shore.

Secured to the walls 11 and 12 of the shore, by welding or other suitable means, at a point below the bracket 13 are elongated angular brackets 20, one of the brackets 20 being secured to each of the members 11 and 12 and flush with their outer edges. Each of the brackets 20 has an inwardly projecting porto the wall 11 or 12 to which it is secured, and

each is provided'with a plurality of slots 22 arranged in vertical alinement.

The sides 23 of the beam and girder forms are bent outwardly at their ends to form flanges24' at substantially right angles thereto, which are provided with verticallyalined openings adapted to register withthe openings or 'slots 22 for the reception of bolts 25, whereby the beam" or girder vforms may be secured directly to the shores. By this construction, the bolts 25 may be removed to free the beam forms from the shores before the V concrete has completely set, leaving the sides 11 and 12 of the shores in contact with the beams and girders at their intersection, which is usually their weakest point, so that the beam forms can be more quickly released for use in another floor mold. The upright member 10 may be made in various lengths, if desired, to conform to beams or girders of various depths, and is shown secured to a bracket 27 adapted to be mounted on a post end, and has an arm 15 pivoted thereto to 1 move from a position in which it is'adapted to engage the floor forms to a disengaged position. A wedge 17 may be inserted in a slot provided therefor in the bracket for maintaining the arm in operative position.

Secured to and flush with the vertical edges of the support 26 are angle brackets 20 having the parts 21 arranged at substantially right angles to'the support 26, and provided with a plurality of vertically alined slots 22 for cooperation with the openings in the beam or girder forms for the reception of the bolts 25, whereby the beam or girder forms are detachably mounted directly on the shores.

Referring to Figs. 13 and 14, a slightly modified form of the shore shown in Figs. 8 and 9 is illustrated, which is substantially the same in all respects except that the upright member 26 is provided with a plurality of vertically alined openings '50 adjacent its lateral edges or on opposite sides of the vertical plane of the bracket 13. The bottom walls 51 of the beam-forms project beyondthe ends of the side walls to meet the bottom' wall of the adjacent form at a point substantially intermediate the side edges of the supports 26' or 26. The bottom walls 51 are also provided with downwardly projecting flanges 52 along their sides, which may be provided with openings adjacent their ends adapted to register withone or another of the openings 50 for the reception of bolts 25 whereby the reception of bolts 25, whereby the bottom wall is secured to the side walls of the beam forms. By moving the bottom wall to register with other openings 53, the bottomwallmay be secured to the sidewalls in other horizontal planes to vary the depth of the beam form. The openings in the shore are arranged to lie in horizontal planes corresponding to the horizontal planes in which the openings58 are arranged so that the bottom wall may be secured to the shores in any of the planes in which it may be secured to the side walls. V V

The floor forms are provided with downwardly projecting marginal flanges 55, and the top edges of the-side walls have angle irons 56 secured to the outer surface, flush with the upper edge, preferably by welding. The angle irons 56 serve to reinforcethe side wall of the beam form along its upper edge, which abuts the lower edge of the flange '55 on the floor form.

The inner wall 30 of the lintel 7 is mounted on shores 3 and the column form in a man ner similar to the side walls of the beam and girder forms. The bottom wall 31 of the lintel is secured to the inner wall 30 at one edge and to the outer wall 32 at its outer edge. The outer wall of the lintel rises above the inner wall a distance equal to the thickness of the concrete slab to be formed on the floor mold, and may be anchored or connected to the inner wall at frequent intervals by means of wires, as usual in the art. The bottom of the lintel may be supported directly on the shores as shown. In the embodiment illustrated in the drawings, the ends of the bottoms of the lintel forms are cut out to fit around the tops 2 of the shores and provided with brackets similar to the brackets 18, whereby they may be engaged with and supported on the arms 15 of the shores, the ends of said bottoms adjacent the column being mounted directly on the column form. By this arrangement, the arms 15 may be disengaged from the lintel forms to permit their removal for use in other places, while leaving the concrete supported directly in contact with the tops of the shores: If desired, the beam bottoms may be constructed and 7 supported directly on the'top of shores in a similar manner. 7 v

The girders are usually of greater vertical depth than the beams, with the result that where they intersect, as at 35, an open space is left in the girder between and below the adjacent ends of the beam. This space is conveniently bridged or covered by means of a- U-shaped piece of sheet material 36, see Fig. 5, adapted to engage the sides of the girder mold beneath the ends of the beam and be supported on the bottoms of the adjacent girder forms.

Referring to Fig. 1, it will be noted that the beam and girder forms are of a length substantially equal to the length of a side of a standard floor form 1; however, whenit becomes necessary to employ narrow floor forms, suchas indicated at 9, a short opening is left in the beam mold. This opening is filled or bridged by means of a short form 40. The beam forms 40 may be constructed likethe standardforms 5 but of a length to fit theparticular opening, or it can be made in two end sections to overlap atthe middle,- and the end sections mountedon the shores in the manner described. I

In Figs. 10, 11 and 12 is shown a special beam form hav ng a longitudinally adjustable bottom wall adapted to fit in the short opening. The side walls'60 of this form-are cut to the length ofthe opening and may be provided with vertical flanges at their ends whereby they may be secured to the adj acent' shores; They are also provided with the us ual openings whereby the bottom wall may be secured thereto. The bottom wall is made of two'parts 61 and 62, the inner end of the part 62 overlapping theinner end of the part 61, and-the outer'end ofeachpart is reinforced by means of an angle iron 63 secured thereto preferably by weld ng and providing downwardly projectingflanges at the ends.

Secured to the under surfacelof the part 61, preferably by welding, are the rods or bars 63 and 64:. The bar 63 is substantially flush with one of its sides and parallel there with, and the bar 64 is spaced inwardly from the side edge a distance substantially equal to the thickness of the bar. Similar rods or bars 63 and 64 are secured at one of their ends to the under surface of thepart 62, the other or innerend being free therefrom-to provide a clearance for the part 61.

The bar-.63 .is flush with one of the side edges of the part62 and the bar 64 is spaced from the other side edge a distance substan tially equal to the-thickness of the bar'. .By this arrangement,;the bars 63%64sand 63', 64. overlap each other at their inner ends,- where theyare provided with slots or open ings .adapted to register with .each' other in various posit ons of adjustment for the reception of bolts 65, whereby the parts may be secured in the adjusted position. By removing the bolts from the openings, the parts 61 and 62 may be adjusted toform a bottom wall of the desired length,;and the bolts reinserted in newly registering openings for securing themin the adjusted position. The bolts 66 which secure the-bottom wall to the s de walls may extend through registering slots in the bars63 and 64cand 63? and 64' and thus cooperate with the bolts for securing. theparts in; adjusted position. The heads of the bolts, 65 are arranged between the bars 63 and 63 and the side .walls of the form. These bolts are therefore countersunk so that the sidewalls may lie in close contact with the side edgesofthe bottom wall.

- as come within the spirit of the invention or scope of the following cla ms.

I claim: 1. Apparatus for forming concrete floor molds, cmprising a shore having an upright support comprising a pair of walls arranged at substantially right angles to each other, a top secured to the upper end of said support with its edges flush with said walls, and a bracket mounted on the support between said walls for supporting a floor form.

2. Apparatus for forming concrete floor molds, comprising a shore having an upright support comprising a pair of'walls arranged at substantially right angles to each other, a top secured to the upper end of said support with its edges flush with said Walls, and an arm pivoted between said walls for supporting a floor form.

3.-Apparatus for forming concrete floor molds, comprising a shore having an upright support, a top secured to the upper end of the support flush with one side thereof, a form supporting arm pivotally mounted on the other side of said support, and a bracket for a beam form also secured to said support.

4. Apparatus for formingconcrete-fioor molds, comprising a shore having an up right support, a top secured to the upper end of the support flush with one side thereof, a form supporting arm mounted on the other side of said support, a pair of vertically arranged brackets secured to said support, and flanges on said brackets arranged at substan'v tially right angles thereto and adapted to support the adjacent ends of beam or girder forms. 1 7

5. Apparatus for forming concrete floor 7 .45 molds, comprising a shorehaving an upright support, a top secured to the upper end of the support flush with one side thereof, a form supporting arm mounted on the other side of said support, a pair of vertically arranged brackets secured to said support, and

' flanges on said brackets arranged at substantially right angles thereto and adapted to have the vertical sides of beam or girderforms'secured thereto. 6. Apparatus for forming concrete floor molds comprising a shore having'an upright; support with a plane surface on one side there- 7 of, a top on said support havingone side arranged in the plane of said surface and proj ecting from said support on its opposite side, and form supporting means on said opposite side of the support movable from an inoperative position under the projecting top to an operative position projecting therefrom.

. 7 Apparatus for forming concrete floor molds comprising a shore having an upright support, two vertically arranged plane side walls on said support meeting each other to form an angle between them, a top arranged over the opening between said sides and flush with said plane side walls, and a form support mounted thereon in said angle and movable to and from an operative form engaging position. 7 v

8. An apparatus for forming concrete floor molds comprising a shore having an upright support, two vertically arranged plane side walls on said support meeting each other to form an open substantially right angle between them, a bracket on one of said walls arranged in a plane substantially parallel with the other of said walls, a form support movable on said bracket to and from an operat-ive form engaging position, and means cooperating with said bracket for securing the form support in operative position.

In witness whereof, I have hereunto signed my name.

HENRY W. ROOS.'

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